I have never timed it but usually start to finish when I update takes about 5 minutes (not counting the time to download over the internet).
Too many other processes and applications open and running maybe, and not enough RAM that requires swapping temporary memory in and out of the hard drive and slows everything up.
The Utilities -> Activity Monitor -> Memory will show the amount of memory used - the more memory used the longer things will take.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
